package t;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

/**
 * Created by Administrator on 2017/10/24 0024.
 */
public class D
{
    public static void main(String[] args)
    {
        List<CharSequence> lk = new ArrayList<>();
        List<String> l = new ArrayList<>();
        String s = copy(lk, l);
    }

    public static <T> T copy(Collection<? super T> dst, Collection<T> src)
    {
        return null;
    }
}
